[dpdk-dev] [PATCH 1/2] eventdev: check timer adapter status before start

[Pavan Nikhilesh Bhagavatula <pbhagavatula@marvell.com>]

From: Pavan Nikhilesh <pbhagavatula@marvell.com>

Check if timer adapter is already started before starting it.
Update the unit test accordingly.

Signed-off-by: Pavan Nikhilesh <pbhagavatula@marvell.com>
---
 app/test/test_event_timer_adapter.c           | 4 ++--
 lib/librte_eventdev/rte_event_timer_adapter.c | 6 ++++++
 lib/librte_eventdev/rte_event_timer_adapter.h | 1 +
 3 files changed, 9 insertions(+), 2 deletions(-)

diff --git a/app/test/test_event_timer_adapter.c b/app/test/test_event_timer_adapter.c
index a45b7d195..d4b78e093 100644
--- a/app/test/test_event_timer_adapter.c
+++ b/app/test/test_event_timer_adapter.c
@@ -1015,8 +1015,8 @@ adapter_start(void)
 	TEST_ASSERT_SUCCESS(_timdev_setup(180 * NSECPERSEC,
 			NSECPERSEC / 10),
 			"Failed to start adapter");
-	TEST_ASSERT_SUCCESS(rte_event_timer_adapter_start(timdev),
-			"Failed to repeatedly start adapter");
+	TEST_ASSERT_EQUAL(rte_event_timer_adapter_start(timdev), -EALREADY,
+			"Timer adapter started without call to stop.");
 
 	return TEST_SUCCESS;
 }
diff --git a/lib/librte_eventdev/rte_event_timer_adapter.c b/lib/librte_eventdev/rte_event_timer_adapter.c
index 79070d484..575da041b 100644
--- a/lib/librte_eventdev/rte_event_timer_adapter.c
+++ b/lib/librte_eventdev/rte_event_timer_adapter.c
@@ -261,6 +261,12 @@ rte_event_timer_adapter_start(const struct rte_event_timer_adapter *adapter)
 	ADAPTER_VALID_OR_ERR_RET(adapter, -EINVAL);
 	FUNC_PTR_OR_ERR_RET(adapter->ops->start, -EINVAL);
 
+	if (adapter->data->started) {
+		EVTIM_LOG_ERR("event timer adapter %"PRIu8" already started",
+			      adapter->data->id);
+		return -EALREADY;
+	}
+
 	ret = adapter->ops->start(adapter);
 	if (ret < 0)
 		return ret;
diff --git a/lib/librte_eventdev/rte_event_timer_adapter.h b/lib/librte_eventdev/rte_event_timer_adapter.h
index db98dec46..0b10a7ab3 100644
--- a/lib/librte_eventdev/rte_event_timer_adapter.h
+++ b/lib/librte_eventdev/rte_event_timer_adapter.h
@@ -339,6 +339,7 @@ rte_event_timer_adapter_get_info(
  *   - -EINVAL if adapter identifier invalid
  *   - -ENOENT if software adapter but no service core mapped
  *   - -ENOTSUP if software adapter and more than one service core mapped
+ *   - -EALREADY if adapter has already been started
  */
 int __rte_experimental
 rte_event_timer_adapter_start(
-- 
2.21.0